Speedy marketing company offers manufactures groove master. This groove master is , a handy gauge which is used very useful to check width of grooves which are more than 1.2 mm wide, at least 0.6 mm deep and placed in bore which is more than 10.00 mm in diameter. Some hardware features of this goove master include: positions of groove faces can also be checked from the outer face of the bore, which are not more than 20 mm away. The principle on which this groove master works is on comparative principle. Standard groove gauge is offered without dial gauge. Technical data include: recommended least count of dial is 0.01 mm or more. Range of measurement: a] with inner face of anvil = 0 10 mm; and b] with outer face of anvil = 1.211.2 mm.
